Problem description:**Artifactory returns PyPi "yanked" release as the latest version 

What is the expected behavior?**A yanked release is a release that is always ignored by an installer, unless it is the only release that matches a version specifier (using either == or ===). See [PEP 592|https://www.python.org/dev/peps/pep-0592/] for more information.

Steps to reproduce:

**execute the following command with pip version 19.2 and above : 

pip install gssapi --no-cache-dir

we expect to get the 1.6.5 version as a result from the above command but we got the 1.6.6 version instead.

(Workaround in comments)